DAVIE, Fla. – It was second and 8 at the Chicago Bears’ 13-yard line. Arizona had the ball, protecting a 14-13 lead early in the fourth quarter. Bears linebacker Khalil Mack lined up opposite Cardinals right tackle John Wetzel. Running back Chase Edmonds was lined up to quarterback Sam Bradford’s right in the four-receiver formation. As the ball is snapped the plan is for Edmonds to chip Mack if he takes an outside path to Bradford, or Wetzel to block Mack if he takes an inside path. Both plans failed.

Mack went outside, easily knocking Edmonds off balance and off his route. Then, as Bradford is flushed from the pocket on his blindside by linebacker Aaron Lynch, he flees up the middle. As Mack makes a beeline toward Bradford, he runs right past Wetzel, who is too slow to get a hand on him. Mack tackles Bradford for the sack, and also causes a fumble. Bears linebacker Danny Trevathan recovers. From there the Bears drove down the field and kicked what turned out to be the...